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# bi.formula_editor
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## 公式编辑控件,基类[BI.Single](/core/single.md)
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{% method %}
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[source](https://jsfiddle.net/fineui/qnquz4o0/)
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{% common %}
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```javascript
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BI.createWidget({
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type: "bi.formula_editor",
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cls: "bi-border",
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watermark:'请输入公式',
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value: 'SUM(C5, 16, 26)',
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width: "100%",
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height: "100%"
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});
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```
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{% endmethod %}
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## API
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##### 基础属性
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| 参数 | 说明 | 类型 | 可选值 | 默认值
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| :------ |:------------- | :-----| :----|:----
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| value | 文本域的值 | string | — | " "|
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| watermark | 文本框placeholder| string | —| " " |
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| fieldTextValueMap | 字段集合 | onject | —| {}|
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| showHint | 是否显示提示信息 | boolean | true,false | true |
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| lineHeight | 行高 | number | —| 2|
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## 对外方法
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| 名称 | 说明 | 回调参数
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| :------ |:------------- | :-----
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| disableWaterMark | 设置文本框placeholder不可用 | — |
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| focus | 文本框获取焦点| — |
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| insertField | 添加字段 | field |
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| insertFunction | 插入函数 | fn |
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| insertOperator | 插入操作符| op|
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| setFunction | 设置函数 | v|
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| insertString | 插入字符串 | str|
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| getFormulaString | 获取公式框内容 |— |
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| getUsedFields | 获取可用字段 | — |
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| getCheckString | 获取校验内容 | — |
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| getValue | 获取文本框值|—|
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| setValue | 设置文本框值|value|
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| setFieldTextValueMap | 设置字段集合 | fieldTextValueMap |
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| refresh | 刷新文本框 | —|
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---
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